Use the NC command in Linux for File Transfer

NC is a powerful command that transfers files between two Linux Hosts. If there are two hosts a and B with IP addresses 192.168.0.1 and 192.168.0.2 respectively, and I need to transmit a file test1.in from host B to host B, the procedure is as follows:

On host:NC-l 25> test1.out
On host B:NC 192.168.0.1 <test1.in

Text
After the device is transmitted, the system automatically disconnects the device. From the above, it is actually a very simple server/client mode. The server enables the listening port and redirects it to
In the test1.out file, wait for the client to connect. The client actively connects to the host, establishes a socket connection with it, And then redirects the transmitted file to the data stream.

Note that the host listening port must be an opened port and can be configured by viewing iptables.